Displacement Ventilation

 

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Click Here to download a study of the effectiveness of displacement ventilation in providing a comfortable internal environment during summer. (481Kb)

The model of the building concentrates on the southern end taking in two main office areas either side of an office. This allows the detailed analysis of the interaction of all the spaces and sub-volumes in terms of radiation and air exchange. The southern end represents the worst case for solar impact. All similar spaces in the remainder of the building will perform at least as well as those modelled.

Section through the southern third of the main building showing micro-climate generated by displacement ventilation

Resultant temperature is a combination of radiant and air temperature and air velocity. It is a measure of thermal comfort. Almost all of the occupied levels are at or below 26oC

Model floor arrangements

The ground, first and second floors are each divided into three layers. The lowest layer represents the floor voids (0.5m), the second layer the occupied zone (1.45m) and the third layer the high level zone representing the top 2.0m of the office space volume.